Excellent car to restore and it looks like you are making some very good progress! I happen to be very partial to these cars and am (very slowly) trying to finish the frame off on my own 73 RS/LT Z/28 4 speed with A/C - Silver with Black interior.
When you get around to restoring the frame hose clamps (like the green one you showed a picture of), here's some info that may be helpful. After a fair amount of searching, I ran across some paint that matched the color of my original hose clamps exactly - Rustoleum American Accents - Summer Squash and Seaside Green. These paints were purchased at Orchard Hardware Supply a few years ago, so they may or may not still be available.
Here's a couple pics of my project (hopefully I get this to work correctly) to give you some inspiration on yours (and maybe prompt me to get off my butt and make some more progress on mine). <span style="font-weight: bold">Keep up the good work!</span>
